A massive offseason trade between the Senators and Panthers has far-reaching implications across the NHL.

The Senators lose one of their best two forwards, while the Panthers pay four picks to become even harder to play against.

As one team executive said Sunday night in reaction to the Tkachuk trade, "This is going to be a crazy summer."

The Tkachuk trade kept the NHL's transactional momentum going. Next up? One of the busiest weeks on the NHL calendar.

The outlook for Canadian NHL teams looks a little bleaker after a trade of Senators star Brady Tkachuk south of the border.

A massive offseason trade between the Senators and Panthers has far-reaching implications across the NHL.